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Finding the Fourth Proportional to 152.88, 211.05 and 96.89

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Solution

The fourth proportional to 152.88, 211.05 and 96.89 is: 133.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.88 : 211.05 = 96.89 : x
  2. Step 2: Convert to fraction form
    152.88/211.05 = 96.89/x
  3. Step 3: Cross multiply
    152.88x = 211.05 × 96.89
  4. Step 4: Simplify right side
    152.88x = 20,449.74
  5. Step 5: Solve for x
    x = 20,449.74/152.88
  6. Step 6: Final answer
    x = 133.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.